Mount Kanmuri, Lava dome in Mount Hakone, Japan.
Mount Kanmuri is a lava dome located within the Hakone volcanic complex in central Japan, reaching about 1,409 meters (4,625 feet). Its slopes show rock formations and surface features that reflect the geological character of the surrounding caldera.
The mountain formed roughly 2,900 years ago through phreatic eruptions on the northwestern side of Mount Kami, giving it its present dome shape. This event was part of a longer series of volcanic activity that gradually built up the Hakone region.
The mountain's name comes from its shape, which recalls the Kanmuri crown worn by Japanese court nobles during ceremonies. This curved outline is still visible today when looking at the dome from a distance.
Several hiking trails lead to the summit, starting from different points and varying in difficulty. Sturdy footwear is recommended, and conditions can change quickly depending on the season.
The formation of this dome blocked the Haya River, which eventually led to the creation of the Sengokuhara plain and Lake Ashi. Both of these landscapes are now among the most visited spots in the area, though few visitors connect them to the mountain.
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